JP2005298474A - Cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prepare a cosmetic having further improved temporal stability while having good sense of use which is characteristics of a silicone oil. <P>SOLUTION: This cosmetic contains (A) a long chain alkyl-modified and/or long chain alkoxy-modified dimethylpolysiloxane, (B) an alkali-soluble emulsion polymer and (C) an alkali agent. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to cosmetics, and more specifically, familiarity, freshness, film thickness, rich and wide spread, non-sticky, refreshing feeling and firm skin effect, and deterioration of texture It is related with the cosmetics which are excellent in stability over time without any separation.

  Conventionally, in skin care products, various oils, surfactants, aqueous components, water-soluble polymers, etc. have been widely studied to ensure skin effects, various feelings of use, and stability over time. I came. Recently, in cosmetics, cosmetics that are particularly refreshing and less sticky have been demanded, and the formulation of silicone oil has been frequently studied. However, silicone oil has poor compatibility with other cosmetic oils such as hydrocarbon oils and ester oils, and if mixed in large amounts in oily cosmetics or emulsified cosmetics, it may impair stability over time. there were. Therefore, various studies have been made on cosmetics containing silicone oil for the purpose of improving stability. For example, cosmetics blended with polyether-modified organopolysiloxane, partially crosslinked organopolysiloxane, partially crosslinked polyether-modified organopolysiloxane, etc. for the purpose of improving compatibility with other oils and emulsion stability (patent Document 1) has been proposed. However, cosmetics formulated with silicone oil maintain the advantages such as the non-stickiness that is characteristic of silicone oil and the refreshing feeling of water repellency and good makeup durability, and also the stability over time. There were some aspects that could not be said to be well maintained.

JP-A-2002-265320

  Therefore, there has been a demand for the development of a cosmetic material that has a good feeling of use, which is a characteristic of silicone oil, and has further improved temporal stability.

  In view of such circumstances, the present inventors have conducted intensive research to solve the above problems, and as a result, contain a specific long-chain alkyl-modified and / or long-chain alkoxy-modified organopolysiloxane, an alkali-soluble emulsion polymer, and an alkali agent. It has good familiarity, freshness, film thickness, richness and spaciousness, no stickiness, refreshing feel and firm skin effect, and stable over time without any deterioration or separation of texture The present inventors have found that a cosmetic material excellent in quality can be obtained, and have completed the present invention.

That is, the present invention includes the following components (A) to (C),
The present invention relates to a cosmetic containing (A) a long-chain alkyl-modified and / or long-chain alkoxy-modified organopolysiloxane (B) an alkali-soluble emulsion polymer (C) ant pottery agent. Moreover, it is related with the said cosmetics which are the long-chain alkyl modification and / or long-chain alkoxy modification organopolysiloxane whose carbon number of the alkyl of the component (A) and / or alkoxy is 14-22. In addition, the component (B) is the following (A), (B), (C)
(B) The above-mentioned makeup which is a copolymer of acrylic acid or methacrylic acid (b) acrylic acid alkyl ester or methacrylic acid alkyl ester (c) acrylic acid polyoxyalkylene monoalkyl ether ester or methacrylic acid polyoxyalkylene monoalkyl ether ester It is about the fee. Moreover, it is related with the said cosmetics whose component (A) is 0.01-10 mass% (henceforth "%" only) and whose component (B) is 0.01-10%. Furthermore, it is related with the said cosmetics containing silicone oil other than a component (A) as a component (D), Furthermore, cosmetics are related with an oil-in-water type emulsion cosmetic.

  The cosmetics of the present invention are well-familiar, have a freshness, a feeling of film thickness, a rich and wide spread, have a non-sticky and refreshed feeling of use, and when applied to the skin, a firm skin effect is obtained. In addition, the cosmetic is excellent in aging stability without deterioration or separation of texture.

The configuration of the present invention will be described below.
The component (A) long-chain alkyl-modified and / or long-chain alkoxy-modified organopolysiloxane used in the present invention is not sticky to cosmetics and gives a refreshing feeling of use, and also improves the temporal stability of cosmetics. It is used for. Since component (A) has a long-chain alkyl group and / or a long-chain alkoxy group, it has a paste-wax appearance at room temperature, and cosmetics containing this have no stickiness and are refreshing. A feeling of use is obtained. In addition, since it forms a film on the skin and hair surfaces and is excellent in water vapor blocking property and adsorption residual property, it also has an excellent moisture retention function. Furthermore, when other oil agents are blended with cosmetics containing component (A), it has a long-chain alkyl group and / or a long-chain alkoxy group in the same manner. In addition, it has high affinity with nonpolar or low polarity oils used in cosmetics, and homogenization in the oil phase can be obtained. As a result, the temporal stability of the cosmetics can be maintained. Therefore, it can be easily dissolved in liquid paraffin, petrolatum, isopropyl myristate, tri (caprylic / capric acid) glyceryl, etc., and used as a part of them or as an alternative. Expected. Examples of such component (A) include long-chain alkyl and / or long-chain alkoxy-modified organopolysiloxane represented by the following general formula (1) or (2).

[Wherein, R ^{1 to} R ⁴ may be the same or different and are represented by C _n H _{2n + 1} O— or C _n H _{2n + 1} − (n is an integer of 1 to 26). P, q and r are each an integer of 1 to 1500, and q + r is in the range of 2 to 2000. However, when R ¹ = R ² and R ³ = R ⁴ , R ^{1 to} R ⁴ are not CH _3- ]

14-22 are preferable and, as for carbon number of the long chain alkyl of a component (A) and / or long chain alkoxy, 16-18 are especially preferable. Such components (A) are commercially available products such as Dow Corning 2503 COSMETIC WAX (manufactured by Dow Corning), Abil Wax 9800 (manufactured by Goldschmidt), Abil Wax 2434 (manufactured by Goldschmidt), SilCare41M65 SteelL -Bearil SDM 5055 (made by Wacker-Chemie), Silsoft W-18 (made by OSI Specialties), etc. are mentioned.

  Although the compounding quantity of the component (A) used for this invention is not specifically limited, It is 0.01 to 10% in cosmetics, More preferably, it is 0.5 to 5%. If it is within this range, a sticky and refreshing cosmetic with good stability over time can be obtained.

  The component (B) alkali-soluble emulsion polymer used in the present invention is used for improving the aging stability of cosmetics and providing excellent cosmetic feeling and skin effect to the cosmetics. Component (B) itself is a low-viscosity polymer / water dispersion, which is a cloudy to slightly cloudy liquid called a polymer emulsion, but is thickened and gelled by the addition of the component (C) alkaline agent, And it changes to transparent. This thickening gel can impart an appropriate viscosity to the cosmetic containing the component (A), so that the stability over time is further improved, and the cosmetic containing the component (A) can be obtained. In addition, it is possible to remarkably improve the familiarity with the skin and the freshness of the skin, and further to improve the feeling of use such as obtaining a feeling of film thickness and a rich spread. This moderate viscosity is that in which the cosmetic properties are in a thick state to a cream state, specifically, a viscosity range of 500 mPa · s (20 ° C.) to 1 million mPa · s (20 ° C.), Within this viscosity range, excellent temporal stability, feeling of use, and skin effect can be obtained. Furthermore, the skin after application | coating can also obtain a firm feeling by the film formation property of component (B) alkali-soluble emulsion polymer itself.

  The component (B) used in the present invention can be used without particular limitation as long as it becomes transparent by the addition of an alkaline agent as described above, and can be thickened and gelled. Polymer emulsion containing a copolymer of acrylic acid and alkyl acrylate as a polymer, polymer emulsion containing a copolymer of acrylic acid and alkyl methacrylate as a polymer, acrylic acid, alkyl acrylate and alkyl methacrylate Polymer emulsion containing a copolymer of styrene, polymer emulsion containing a copolymer of acrylic acid, methacrylic acid and alkyl acrylate ester, copolymer of acrylic acid, alkyl acrylate ester and polyethylene glycol acrylate Combine the polymer Polymer emulsion, acrylic acid, methacrylic acid alkyl ester and acrylic acid (polyoxyethylene monoalkyl ether) ester copolymer emulsion, acrylic acid, methacrylic acid alkyl ester and methacrylic acid (polyoxyethylene monoester) A polymer emulsion comprising a copolymer of an alkyl ether) ester as a polymer, a polymer emulsion comprising a copolymer of itaconic acid, an alkyl acrylate ester and a methacrylic acid (polyoxyethylene monoalkyl ether) ester as a polymer, acrylic acid, Examples of the polymer emulsion include a copolymer of acrylic acid alkyl ester and itaconic acid (polyoxyethylene monoalkyl ether) ester as a polymer component. These of one or two or more thereof is used.

Among these, in order to obtain the stability over time, the excellent feeling of use, and the skin effect, which are the effects of the present invention, the component (B) is a polymer emulsion containing the following three-component copolymer as a polymer component. It is preferable.
(A) acrylic acid or methacrylic acid (b) acrylic acid alkyl ester or methacrylic acid alkyl ester (c) acrylic acid polyoxyalkylene monoalkyl ether ester or methacrylic acid polyoxyalkylene monoalkyl ether ester

  A copolymer obtained by copolymerization of the above three components is an acrylate / ceteth-20 methacrylate copolymer (ACRYLATES / CETETH-20 METHACRYLATE COPOLYMER) listed in ICID (International Cosmetic Ingredient Dictionary). 50 acrylate copolymer (ACRYLATES / STEARETH-50 ACRYLATE COPOLYMER), acrylate / steareth-20 methacrylate copolymer (ACRYLATES / STEARETH-20 METHACRYLATE COPOLYMER), acrylate / Beneness-25 methacrylate copolymer (ACRYLATEH / 25) THACRYLATE COPOLYMER) is exemplified, and in the form of a polymer emulsion, commercially available products such as Acrine 22 (resin content 30%), Aculin 28 (resin content 20%) (both manufactured by Rohm & Haas) are specifically exemplified. And can be suitably used for the product of the present invention.

  Further, although it is not a copolymer of the three components (a), (b) and (c), an acrylate / steareless-20 itaconic acid copolymer (ACRYLATES / listed in ICID (International Cosmetic Ingredient Dictionary) is preferable. Copolymers such as STEARETTH-20 ITACONATE COPOLYMER) and acrylate / ceteth-20 itaconic acid copolymer (ACRYLATES / CETETH-20 ITACONATE COPOLYMER) are also included. Specific examples of the polymer emulsion include STRUCTURE 3001 (manufactured by National Starch).

  Although the compounding quantity of the component (B) used for this invention is not specifically limited, 0.01-10% in cosmetics as a resin part, More preferably, it is 0.1-5%. Within this range, when neutralized with an alkaline agent, it is possible to impart an appropriate viscosity to the cosmetic, further improving the stability over time, and also, such as freshness, film pressure sensation, and rich spreading A cosmetic that can give a feeling of use and a firm skin effect is obtained.

  The component (C) alkaline agent used in the present invention is used to neutralize and thicken the component (B) and make it transparent. Examples of the component (C) include inorganic basic substances such as sodium hydroxide and potassium hydroxide, and organic basic substances such as triethanolamine, isopropanolamine and arginine, and one kind or two or more kinds can also be used. .

  The amount of component (C) used in the present invention varies depending on the type and amount of component (B), the type of component (C), etc., and is not particularly limited, but the cosmetic pH is about 5-9. More preferably, it is blended so as to be in the range of 6-8 so as to be in the range.

  Furthermore, in the cosmetic of the present invention, silicone oil other than the component (A) can be blended as the component (D) in order to further reduce stickiness and improve the refreshing feeling. The silicone oil is not particularly limited as long as it can be incorporated into cosmetics. For example, dimethylpolysiloxane, cyclic silicone, methylphenylpolysiloxane, methylhydrogenpolysiloxane, higher fatty acid-modified organopolysiloxane, fluorine-modified Examples thereof include polysiloxane and trimethylsiloxysilicate, and one or more of these can be appropriately selected and used. Among these, dimethylpolysiloxane, cyclic silicone and the like are particularly preferable from the viewpoints of usability and stability over time. Although the compounding quantity of the component (D) in this invention is not specifically limited, It is 0.5 to 80%, Preferably, it is 1 to 60%.

  In addition to the above components, the cosmetics of the present invention are components used in ordinary cosmetics, for example, oils other than components (A) and (D), surfactants, powders, and water solutions other than components (B). Functional polymers, polyhydric alcohols, lower alcohols, ultraviolet absorbers, antioxidants, bactericides, preservatives, fragrances, colorants, cosmetic ingredients, etc. can be used within the range not impairing the effects of the present invention. The manufacturing method is possible by a method for manufacturing a normal cosmetic.

  The cosmetic composition of the present invention is not particularly limited in its dosage form, but an oil-in-water emulsion is preferred to obtain the good feeling of use of the present application, and is used for applications such as skin lotion, emulsion, cream, and cosmetic liquid. Examples of the method of use include a method of using by hand, a method of using by impregnating a nonwoven fabric and the like.

  Next, although an Example is given and this invention is demonstrated further in detail, this invention is not restrict | limited at all by these.

Examples 1 to 7 and Comparative Examples 1 to 5; Cream Creams having the compositions shown in Table 1 below were prepared by the following production method, feeling of use (freshness, film thickness, non-stickiness), skin effect (harshness) The stability over time (separation, texture) was evaluated by the following evaluation method, and the obtained results are also shown in Table 1.

(Manufacturing method)
A: Components 1 to 5 are heated to 50 ° C. and mixed uniformly.
B: Components 6 to 14 are mixed at room temperature and mixed uniformly.
C: B was added to A and emulsified, and then cooled to obtain a cream.

(Evaluation method): Feeling of use, skin effect Using 10 professional sensory evaluation panel members, the use test of each sample of Table 1 was conducted.
The feeling of use was evaluated based on the following five criteria for sensory evaluation, and was judged from the following criteria based on the average score of 10 people.
<Sensory evaluation criteria>
4: Very good.
3: Good.
2: Normal.
1: Defect.
0: Very bad.
<Judgment criteria>
◎: 3.5 or more ○: 2.5 or more and less than 3.5 △: 1.5 or more and less than 2.5 ×: Less than 1.4

(Evaluation method); Stability over time; Separation, texture After the cream of Table 1 was manufactured, it was filled in a predetermined glass bottle and stored in a thermostat at 50 ° C, 40 ° C, and 5 ° C. The condition after one month was observed using a product stored at 5 ° C. as a control, and evaluated according to the following criteria. In addition, about the separation, the state of a 50 degreeC preservation | save goods was observed, and about the texture, the state of a 40 degreeC preservation | save goods was observed.
<Judgment criteria; separation>
A: No change in appearance and no separation at all compared to the control product.
○: A slight change in appearance is seen compared to the control product, but no separation is seen.
(Triangle | delta): The separation tendency is seen compared with a control product.
×: Clearly separated from the control product.
<Judgment criteria: texture>
A: There is no change in texture at all compared to the control product.
○: A slight change in texture is seen compared to the control product.
(Triangle | delta): Compared with a control | contrast product, there exists a texture.
X: The roughness of the texture is clearly conspicuous compared with the control product.

  As is clear from the results in Table 1, the creams of Examples 1 to 7 of the present invention are all “use feeling (freshness, film thickness, no stickiness)”, “skin effect (harshness)”. The cosmetics were excellent in all the items of “Stability with time (separation, texture)”. On the other hand, Comparative Example 1 which does not contain component (C) and contains gellan gum instead of component (B) is inferior in film thickness and elasticity and also causes separation, and Comparative Example 2 which contains xanthan gum instead of component (B) Had a feeling of film thickness and caused separation. Moreover, the comparative example 3 which mix | blended the carboxy vinyl polymer instead of the component (B) was inferior to freshness and a film thickness feeling, and produced isolation | separation. Moreover, the comparative example 4 which does not contain a component (A) was inferior in stickiness, and the comparative example 5 which did not contain a component (A) and mix | blended the carboxy vinyl polymer instead of the component (B) was inferior in all the items. .

Example 8: Cosmetic liquid (ingredient) (%)
1. Refined olive oil 0.5
2. Vaseline 0.2
3. Long-chain alkyl-modified organosiloxane (Note 1) 2.0
4). Poly (oxyethylene / oxypropylene) methyl polysiloxane copolymer (Note 4) 1.0
5). Alkali-soluble emulsion polymer (Note 3) 3.0
6). Propylene glycol 5.0
7). Dipropylene glycol 10.0
8). Glycerin 3.0
9. Sodium hydroxide 0.12
10. 10. Methyl paraoxybenzoate Perfume appropriate amount 12. Purified water remaining amount (Note 4): Silicon KF 6012 (manufactured by Shin-Etsu Chemical Co., Ltd.)

<Manufacturing method>
A: 1 to 4 are uniformly dissolved at 70 ° C.
B: 5-10 and 12 are uniformly dissolved at 70 ° C.
C: A is added to B and emulsified.
D: C is cooled to room temperature, and 11 is added to obtain a serum.

  The essence of Example 8 is familiar, fresh and easy to use without feeling sticky, and when applied to the skin, it feels moisturized and firm and has excellent stability over time. It was.

Example 9: Emulsion (component) (%)
1. Dialkyl carbonate (14,15) 3.0
2. Squalane 1.0
3. Long chain alkyl-modified organopolysiloxane (Note 5) 2.0
4). Polyoxyethylene / methylpolysiloxane copolymer (Note 2) 1.0
5). Alkali-soluble emulsion polymer (Note 6) 3.0
6). Propylene glycol 5.0
7). Dipropylene glycol 10.0
8). Glycerin 3.0
9. Potassium hydroxide 0.16
10. 10. Methyl paraoxybenzoate Perfume appropriate amount 12. Ethanol 5.0
13. Purified water remaining amount (Note 5): Abil Wax 9800 (manufactured by Goldschmidt)
(Note 6): Acrine 28 (resin content 20%) (Rohm & Haas)

<Manufacturing method>
A: 1 to 4 are uniformly dissolved at 70 ° C.
B: 5-10 and 13 are uniformly dissolved at 70 ° C.
C: A is added to B and emulsified.
D: C is cooled to room temperature, and 11 and 12 are added to obtain an emulsion.

  The milky lotion of Example 9 is well-familiar, smooth, has a feeling of film pressure, is easy to use without feeling sticky, and when applied to the skin, it feels an appropriate emollient feeling and firmness, and also has stability over time. It was good.

Example 10: Cream (ingredient) (%)
1. Isononyl isononanoate 3.0
2. Vaseline 1.0
3. Long chain alkoxy-modified organopolysiloxane (Note 7) 5.0
4). Polyoxyethylene / methylpolysiloxane copolymer (Note 4) 1.0
5). Monooleic acid polyoxyethylene sorbitan (20E.O.) 0.5
6). Alkali-soluble emulsion polymer (Note 3) 10.0
7). Propylene glycol 5.0
8). Dipropylene glycol 10.0
9. Glycerin 3.0
10. Triethanolamine 0.5
11. Methyl paraoxybenzoate Appropriate amount 12. Perfume appropriate amount13. Ethanol 5.0
14 Purified water remaining amount (Note 7): Silsoft W-18 (manufactured by OSI Specialties)

<Manufacturing method>
A: 1 to 5 are uniformly dissolved at 70 ° C.
B: 6-11 and 14 are uniformly dissolved at 70 ° C.
C: A is added to B and emulsified.
D: C is cooled to room temperature, and 12, 13 is added to obtain a cream.

  The cream of Example 10 has good familiarity, a film pressure sensation, a rich stretch, no stickiness, and when applied to the skin, it has a high emollient feeling and a firm feeling, and is stable over time. It was something.

Claims (6)

Next components (A) to (C)
(A) Long-chain alkyl-modified and / or long-chain alkoxy-modified organopolysiloxane (B) Alkali-soluble emulsion polymer (C) A cosmetic comprising an ant pottery agent. The cosmetic according to claim 1, wherein the long chain alkyl and / or long chain alkoxy of the component (A) has 14 to 22 carbon atoms. Component (B) is the following (A), (B), (C)
(I) Acrylic acid or methacrylic acid (b) Acrylic acid alkyl ester or methacrylic acid alkyl ester (C) Acrylic acid polyoxyalkylene monoalkyl ether ester or methacrylic acid polyoxyalkylene monoalkyl ether ester copolymer The cosmetic according to claim 1, wherein the cosmetic is characterized by the following. Component (A), (B) (A) 0.01-10 mass%
(B) 0.01 to 10% by mass
The cosmetic according to any one of claims 1 to 3, wherein the cosmetic is contained. Furthermore, silicone oil other than a component (A) is contained as a component (D), Cosmetics of any one of Claims 1-4 characterized by the above-mentioned. The cosmetic according to any one of claims 1 to 5, which is an oil-in-water emulsion.